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680 Chesapeake Drive Redwood Cry CA 94063 (650)3649600 FAX(650)364-9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite S Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> ex) Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792.0342 <br /> 155, Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Gettier-Ryan 0ublm Client i'roject iii Unocal SS#5098, Stockton `Sampled w` Jun 417,h 1999 <br /> 6747 Sierra Court, Suite J Sample Descrlpt Water, MW-21 D Received Jun 18, 1999, <br /> Dublin, CA 94568 Analysis Method EPA 8260 Analyzed Jun 28, 1999- <br /> Attention Deanna Harding Lab Number 906-1577 Reported Jun 30, 1999- <br /> OXYGENATED <br /> 999-OXYGENATED COMPOUNDS (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> N9/L Fr9/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether(DIPE) 20 N D <br /> Ethyl t-Butyl Ether(ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limit% % Recovery <br /> Dibromofluoromethane 50 150 102 <br /> 1,2-Dichloroethane-d4 50 150 96 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> Janne Pegley <br /> Project Manager <br /> 9061562 GEr <7> <br />